本帖最后由 草根的草根 于 2016-3-10 22:57 编辑
接修一台康佳LED321597N液晶电视,开机刚出现声音和图像,屏幕就显示“电视即将进入待机模式,请在提示语消失后断电”的提示,然后马上待机,待机后又重新启动,重复上面的过程,大家帮忙分析分析是什么原因,谢谢!
补充:测电源电压正常,主板号:3501606,屏号:LTA320AN01,开机打印信息如下:2016-3-10, 22:20:1
COM5, BaudRate:115200 bps, RXD: VGA->12,TXD: VGA->15, Printed by RT809F:
UART_115200
BIST0-OK
[3456789A]
[456789ABC]-68
_U
Hello U-Boot
U-Boot 1.1.6 (Aug 6 2011 - 15:01:47)
Board: MSTAR AMBER1 (CPU Speed 576 MHz)
DRAM: 256 MBytes
U-Boot is running at DRAM 0x87600000
Module: KEYPAD USB FAT NAND FLASH UBI UBIFS NET SPI STANDBY JFFS2 LOGO OSD ENV=SERIAL
Flash is detected (0x0707, 0xEF, 0x40, 0x14)
MDrv_SERFLASH_GetInfo()
u32AccessWidth = 1
u32TotalSize = 1048576
u32SecNum = 16
u32SecSize = 65536
>>> nand: AUTO CE/WP
Flash Make code = 0xEC, ID = 0xDA
Flash Make code = 0xEC, ID = 0xDA
...
NAND: 256 MBytes
In: serial
Out: serial
Err: serial
Net: MSVC00B000100100421604TH0000000T
EnvFlag =:198.....CONFIG_ENV_ADDR=:E0000
cbuffer[0] =:0xFF...cbuffer[1] =:0xFF...cbuffer[11] =:0xFF
Check USB port[0]:
Error, couldn't init Lowlevel part
Check USB port[1]:
Error, couldn't init Lowlevel part
keypad_pressed_1 is:0
[0]adc_val =:0x9
keypad_pressed_2 is:0
--> ac boot <--
UART BUS OFF! |